Pump for priming, &amp;c.



W. J. RUDOLPH.

PUMP FOR PRIMING, &c.

APPLICATION mso 11m19.191s.

1 ,396,529. Patented Nov. 8, 1921.

vin the specification and UNITED -s'mxlas PATENT orner-1.4l

WALTER J. RUDOLPH, OF CHICAGO, ILLINOIS, ASSIGNOR T'O THE IMPERIAL BRASS MANUFACTURING COMPANY, F NDIS.

CHICAGO, ILLINOIS, A CORPORATION 0F ILLI- PUMP non PRIMING, aw.

Specification of Letters Patent.

Patented N ov. 8, 1921.

Application led December 19, 1919. Serial No. 346,041.

To all fwwm i?? may (.oacern Be it known that I, WALTER J. RUDOLPH;

' a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Pumps for Iriming, Src., of which the following is a full, clear, and exact specification.

My invention is concerned with pumps, and more especiallywith priming pumps, which are usually placed on the dashboard of automobiles, and are employed to pump an extra amount of gasolene to the intake manifold for priming, etc., and is designed to produce a pump of the class described that shall be operated on the discharge stroke by spring pressure instead Tof positively.

It uis further designed to produce av pump of the class described that will automatically close the auxiliary valve'necessary in this class of pumps to prevent the suction of the engine drawing the gasolene through the check valves when the pump is not in operation.

Itis further designed to produce ay pump in which the tension of the spring on the intake check valve will be automaticallyincreased when the pump is not in operation.

It is further designed to produce` a pump of the class described that can be substantially completely does not need to be disassembled in installing it on the dashboard. y l

It is further designed to producea pump in which the auxiliary valve shall be so constructed and mounted that it seats itself automatically and vperfectly even if the seat should be somewhat out of alinement with the barrel.

It is finally concerned with certain novel details, all of which will 'be fully described particularly pointed out in the claims.

To illustrate my invention, I annex hereto a sheet of drawings in which the same reference characters are used to designate identical parts Figure 1 is a side elevation of my improved pump as it appearsinstalled on a dashboard;

F ig. 2 is a central longitudinal section;

Figs. 3 and 4 are cross-sections on the lines 3-3 and-4 4, respectively, of Fig. 2, but on an enlarged scale.

assembled in the shop and v in all the figures of which--Y In the ordinary use of my invention, it is installed'on the dashboard 10 of an automoblle vby having the barrel 11 passed through a suitable aperture in said dashboard and secured by the contact of the flange 12 of the hexagonal nut 13 screwed on the end of the barrel coperating with one side of the dashboard and the hexagonal nut 14 threaded on the barrel of the pump coperating with the other side of the dashboard through the washer 15. The nipple 16 threaded into the' inlet port body 17 and the nipple 18 similarly threaded into the outlet port body 19, both of which port bodies form a part of the end casting 20, are connected by the pipes 21 and 22 with a sup-ply of gasolene and with the intake manifold respectively.

The barrel 11 of the pumpI is of the customary cylindrical construction, and one end is closed by the casting 20 which has the annular flange 21 extending over and secured to the end of the barrel in any desired manner, preferably by soldering. The other end'of the barrel -is closed by the end piece 23, which consists of. a. disk having a central aperture for the piston rod 24 with an inwardly extending annular flange 25 fitting somewhat snugly in the end of the barrel and with a smaller outwardly extend- `ing annular llange 26, whichl serves to shield the collar 27, lwhich may be a. hexagonal nut pinned or otherwise secured near the end of the piston rod 24, so as to prevent as far as possible anything being caught between the inner end of the collar 27 and the end of the barrel.

The end casting 20 has formed in the' axial center thereof the conical valve seat 28, with which coperates a similarly shaped valve 29,v preferably formed with the annular channel 30 in the face of the conical body thereof. 'A rod-like extension 31 of this valve, when it is seated, extends into the adjacent end of the nipple 16, and engages and shoves inward the movable abutment 82, which is preferably a square block, and increases the tension of the helically coiled expanding spring 33 interposed be" tween said block 32 and the ball check valve 34, which coperates with the customary valve seat 35 in the nipple. The outlet 18 is Vof the customary construction and contains the helically coiled expanding spring 36 cooperating with a shoulder 1n the passage at one end and with the' ball check valve 37 at the other end, which check valve coperateswith the valve seat 38 formed in the discharge port 39.

The iston rod 24 is surrounded by the strong iielically coiled expanding spring 40, one end of which abuts against the end piece 23 while the other end abuts against the nut 41 which is preferably pinned to the threaded end of the plunger 24. Pressed against this nut 41 by the nut 42 likewise threaded on said end is the piston 43, which may be ofv any desired construction, but which preferably consists of the central disk 44 separating the pair of cup-shaped leather washers 45 facing oppositely and held in place by the metallic cups 46 with the recessed flanges. i

The nut 42 preferably has its outer facel concave so as to coperate with the adjacent convex end of the valve 29, which is securedv on thereduced end 47 of the piston rod 1n the manner best shown in Figs. 2 and 4, where it will be seen that said auxiliary valve has the aperture48 therein, somewhat larger than the reduced end 47 extending` thereinto, and a pin 49 is passed through the end of the valve and through the aperture 50 in said reduced end 47, Which aperture, as seen in Fig. 4, is ared from the center out.- ward in both directions, so that the valve 29 has a limited universal movement relative to the adjacent end of the piston; so that it can seat itself readily and accurately on the seat 28, even if the said seat should due to inaccuracy of manufacture be sli htly out of alinement with the `axis of the ari-el 11.

The handle 51 has a knob of some considerable size so as to make it easy for the user to grasp and is screwed on the end of the piston rod 24.

The pump is completely assembled in the shop, except that the handle 51 and the nut 13 are removed, or ii it isshipped with the nut and 'handle in place, the handle can be readily removed by putting a wrench on the hexagonal collar 27 and turning the handle, and the nut 13 can of course be readily removed. When the nut 13 is removed, there is no tendency ior the spring to throw the end piece 23 out ot the barrel, because the thrust oi the spring can only operate to throw the end piece outward until'it contacts with the adjacent end oit the collar 27,

which it will do before the flange 23 emerges 'iromithe end oi' the barrel. @n account of this construction, therefore, it is an easy matter to install the `pump without opening it up so as to get any dirt into it, despite the presence oi the spring 40.

ln operation, it will be obvious that the handle 57 is drawn out, thus putting the spring 40 under tension and drawing the gasolene through the nipple 16 and into the body oi the barrel in 'the customary manner.

When the handle is released, the spring 4() forces the piston inward, opening the check vaive 37 and forcing the contents down through lthe pipe 22 to the intake manifold. At the end of the stroke, the member 29 seats itself and closes they auxiliary valve, which is necessary to`.prevent the suction from the intake of the engine drawing the oil in past the check valve 34 and` out through the discharge port 39.-' The channel 30 in the conical base of the valve makes in effect two valve seats, one for the outletand the other for the inlet ports, and does not necessitate so perfect a grinding of the conical seat. The connect-ions between the end of the piston rod and the Valve 29 are slightly loose, as previously explained, and permit the valve 29 to seat itself perfectly, while there is not suiicient movement possible so that the rod-like extension 31 can get out-of alinement with the large opening to the valve seat 28.

lfvhile'l have shown and described my invention as embodied in the form which l consider best adapted to Carry out its purposes it will be understood it is capable of modifications, and that l donot desire to be limited in the interpretationo the following claims, except as may be necessitated by the state of the prior art. f

What l claim as new, and desire to se-l cure by Letters' Patent of the United States'is:

1. ina pump, thecombination with a barrel, of a closure for one end oi said barrel having a conical valve seatithereim-inlet and outlet ports extending through said closure and one terminating in said valve seat, a piston in said barrel and aconicalvalve carried by the piston and having an annular channel therein registering with the port `terminating in the valve seat when the valve is seated. i

2. lin a pump, the combination with a barrel, of a closure for ,one end oi said barrel having a conical valve seat therein, inlet and outlet ports extending through said closure and one terminating in said valve seat, a piston in said barrel, a conical valve carried by the piston, having annular channel therein registering with the port terminating in the valve seat when the valve is seated, a spring associated with the barrel and put under tension bythe movement oit the piston to iill the barrel, and means 'lor moving therpiston. y

3. 'in a pump, the combination with a barrel, oit an inlet port, a spring pressed check valve in said port, an outlet port, a piston in said barrel, means associated with said piston to increase the tension et the spring of ythe check valve when the piston is in its normal position adjacent the ports, and a reiativelv poweriul spri acting returnsaid piston to said normas. position.

fl. In a pump, the combination with a barrel, of an inlet port, ka spring pressed check valve in said port, an outlet port, a piston in said barrel, means associated with said piston to increase the tension of the spring of the check valve when the piston is in its normal position adjacent the ports, a piston rod connected to said piston, and a helically coiled expanding spring surround-- ing said rod and interposed between the other end of the barrel.

5. ln a pump, the combination with a barrel, of an inlet port co-axial with said barrel, a spring pressed check valve in said port, an outlet port, a piston in said barrel, means associated with said piston to increase the tension of the spring of the check valve when the piston is in its normal position, said means including a. movable abutment in the inlet port taking the thrust of a helically coiled expanding spring interposed bepiston and the tween it and a check valve, and a projection from the piston engaging the abutment and Jforcing it toward the check valve when the piston is in its normal position. Y

6. In a pump, the combination with a barrel, of valve controlled inlet and outlet ports, a piston. associated with said barrel, an auxiliary valve seat for the inlet port, an auxiliary valve associated with the piston to close said inlet port, and a spring acting on said piston and tending to force it to its position in which the auxiliary valve is closed.

7. In a pump, the combination with a barrel, of valve controlled inlet and outlet ports, a piston associated with said barrel, an auxiliary valve seat :for the outlet port, an auxiliary valve associated with the plston to closel said outlet port, and a spring acting on said piston and tending to force it to its position in which the auxiliary valve is closed.

8. In a pump, the combination with a barre of valve controlled inlet and outlet ports, a piston associated with said barrel, an auxiliary valve seat for the inlet and outlet ports, an auxiliary valve associated with the piston to close said ports, and a spring acting on said piston and tending to force it to its position in which the auxiliary valve is closed.

9. In a pump, the combination with a barrel, provided with inlet and outlet ports, of an adjustable abutment member thereon to position the barrel, a piston mounted to reciprocate therein, a piston rod connected thereto and extending through one end of the barrel, an internally mounted closure through which the piston 'rod reciprocates and by which it is guided, and an external annulus removably secured on 4the exterior of the end of the barrel through which the piston rod moves, said annulus having a iange engaging the closure to hold it in place, and also cooperating with the abut- 10. In a pump, the combination with a barrel provided with inlet and outlet ports, of a piston mounted to reciprocate therein, and a piston rod extending through one end of the barrel, said end being formed of an internally mounted closure through which the piston rod reciprocates, an external annulus removably secured on the exterior of the end of the barrel through which the piston rod moves and having a flange engaging the closure, a wrench abutment secured near the outer end of the piston rod outside of the barrel, and a handle threaded on said outer end.

ll. In a pump, the combination with a barrel provided with inlet and outlet ports, of a piston mounted to reciprocate therein, a piston rod secured thereto, extending through one end of the barrel, said end consisting of a disk perforated for the piston rod and having a large annular' flange projecting inwardly and fitting into the end of the barrel and a smaller annular flange projecting outwardly, an external annululs removably secured on the exterior end of the barrel through which the piston rod moves and having a flange engaging the disk, and a wrench abutment secured on the outer end ofthe piston rod and entering the smaller annular flange. j

12. In a pump, the combination with .a barrel provided with inlet and outlet ports, of a piston mounted to reciprocate therein,

a piston rod secured thereto extending through one end of the barrel, said end consisting of a disk perforated for the piston rod and having a large annular flange projecting inwardly and litting into the end of the barrel and a smaller annular flange projecting outwardly, an external annulus removably secured on the exterior of the end of the barrel through which the piston rod moves and having a Hange engaging the disk, a wrench abutment secured on the outer end of the piston rod and entering the smaller annular flange, and a handle threaded on said outer end of the piston rod.

13. In a pump, the combination with a barrel provided with inletand outlet ports, of a piston mounted to reciprocate therein, a piston rod extending through one end of the barrel, an internally mounted closure through which the piston rod reciprocates and by which it is guided, a helically coiled expanding spring introduced between said piston and said closure, a collar removably secured upon and cooperating with the adjacent end of the barrel and with said closure to hold it in place, a removable knob on the end of the piston rod, and means for preventing the accidental movement of said closure from the end of the barrel when the knob and the collar aremoved.

1 4. In a pump, barrel of a piston mounted to reciprocate therein, a piston rod extending through' one end of the barrel, -an internally mounted closure through which the piston rod reciprocates and by which it is guided, a helically coiled expanding spring introduced between sai piston andi said closure, secured upon and coperating with the adjacent end of the barrelmand with 'said closure to hold it in place, on the end of, the piston rod, andan abutment vsecured on the piston rod outside of the closure and tending to ,prevent the latter from being moved out of the barrel by the 'my hand spring.

15. In a pump, the combination with a barrel provided with inlet and outlet ports, ot a conical auxiliary valve seat controlling said ports,-- a piston reciprocating in the combination with a rovided with inlet and outlet ports,

d therethrough a collar removably v a removable knob' said barrel, and a conical valve extension secured to said piston by a universal joint.

16. In a pump, the, combination with a barrel provided with inlet and outlet ports, of a conical'auxiliar'y valve seat controlling said ports, a piston reciprocating in said barrel, having associated therewith a concave bearing surface With a lug projecting centrally therefrom and having an aperture flaring toward both ends, and a conical auxiliary valveextension having a recess in ,one end -into which the lug extends, and a pin passing through the aperture, and a convex bearing surface cop- @rating with the "aforesaid concave bearlng surface, Substantially as and for the purpose described.

In Witness whereof, I have hereunto set and aiiixed my seal, this 16th day of December, A. D. 1919."

WALTER J .j RUDOLPH. [1.. s.] lWitness:

JOHN HOWARD MoELRoY, 

